4121550 has 96 divisors (see below), whose sum is σ = 11784960. Its totient is φ = 1058400.

The previous prime is 4121549. The next prime is 4121561. The reversal of 4121550 is 551214.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58015 + ... + 58085.

It is an arithmetic number, because the mean of its divisors is an integer number (122760).

Almost surely, 2^4121550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4121550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5892480).

4121550 is an abundant number, since it is smaller than the sum of its proper divisors (7663410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4121550 is a wasteful number, since it uses less digits than its factorization.

4121550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 4121550 is about 2030.1600922095. The cubic root of 4121550 is about 160.3319929445.

Adding to 4121550 its reverse (551214), we get a palindrome (4672764).

The spelling of 4121550 in words is "four million, one hundred twenty-one thousand, five hundred fifty".